Hose forming machine



Dec.. 13, 1949 R F BEIDLE HOSE FORMING MACHINE 2 Sheets-Sheet l Fild OC. 3, 1947 NVENTOR 2 Sheets-Sheet 2 /WWFNTOE @055er ff" Blf/DLE BY JM R F BEIDLE HOSE FORMING MACHINE s NES: l

Dec. 13, 1949 Filed oct. 5, 1947 Patented Dec. 13, 1949 TfU-NIFTEDSTATES PATENT yOl="l=."I.Cl5`.

HOSE FORMING MACHINE "'-Robert' F.v Beidle,' Cleveland, Ohio, assigner of one-third to Ben Kravitz,` Cleveland, Ohio, and one-third to Oscar C.,Kravitz, Cleveland, Ohio Application October 3, 1947, Serial N0. 777,630

Claims.

AAnotherLobject` is Vtofrrivile a hose Aforming .machine Lwhichiseconomical to manufacture .and .useand which is practically automatic in .it'sjoperation.

.Thesefandltherobjects of :the invention will become apparent from a reading of the following Specication. and claims, together with the accoinnanying'drawings in which the same parts .are'referred' to and indicated by the same refer- Lence'eharacters and wherein:

Figure 1 is a view 'of the hose forming machine,4 partly' schematic, made in accordance witlri` tbs.,invention;

v." Figure 2 is an enlarged vertical cross sectional View of the machine and a part of the hose beinglformed thereon, taken substantially along @chine and hose taken substantially along the i line 5-5 of the` Figure 1 Figure 6 is another similar view of 'themachine and yhose taken substantially along the line 65-6 of :the YFigure 1;

.Figure '7 isf an enlarged cross sectionalfvview fof a'portion of the machinev alone;

"Figure 8v is across sectional view ofthe'machine taken 'substantially along the line 8-8 of the `Figure .r 7;

- Figure 9 is another cross sectional-viewof `-the `maclrii-ne taken substantially along" the line 9-9 "machine taken'rsubstantially along the yline Ill-I 0 -of the-Figure '7:`

Figure l1 islanother'vcross sectional view-of the 'g machine taken-substantially along the'lin'e l |'l I "go thefEiguref'Iyand -hose" iwithrvportionsthereof broken away to show lthe1different layers-of Vplies and material thereof.

' point.

This inventionconsists lbroadly of a mandrel, nozzles, a cord winding or plying device, :and a rubber curing means. Each of these elements will be described in detail and in the order stated'.

The mandrel 2ll, A as shown` inthe accompany-v ing drawings, is a bar-shapede-metal member having a peripheral surface 3lc0rrespondingto the shape of the inner surfacefof,` the hoset be formed. This mandrel 20, as shown, has three vcharniels, extending longitudmally' therethrough.

The rst channelZl `has a portj22 andtof'which there is attached a conduit 3l which leads to a source of lubricating fluid. Thechannel-Q2! has a vent 23 which opens into the periphery Offjthe mandrel.v The second channel 24 has a'prt 125 connected to the conduit 34 whichlead'sfto'another source of lubricating iiuid..vv Thechannel 24 has a vent 26 slightly forward of the port23.

Similarly, the third channel 21 has a p'ort 28 .con-

nected to a thirdlubricating ,uid conduit 33 and a forward vent`29. The vent`2'9, unlikethe vents 23 and 26,.opens at the end vof' the mandrel",in stead ofin the periphery thereof.

The preferred lubricating fluid is compressed air; however, liquid Vi'luids or dusting powders might also be used and applied through'the channels. The purpose of the lubricating fluid isfto prevent the newly formed layer of tubular hose materialv from adhering. to the .mandrel @and to cause it toslide easily therealong, so that itmay be automatically operated on and treated'gat various stages. Heretofore Ait hasbeen thepraeticev to apply oilor powder on the surface of the mandrel to prevent` the hose from adhering theretmbut it has just been found that byv blowingairinto the space -58 vbetween thelmandrel and ,the newly formed 'first layer of hose, the air will inflate the, unfinished hose ,suflicientlyto allow it to move steadily and smoothly.alongfllhe mandrel.

Where thefrst layer' 55 of unfinished hose material is unprotected or uncovered, a Ailovvf,of'air under relatively low, pressure Ais desirable. A pressure of about ten pounds is sufficientatthat After the cords v'.53 -andf 54 have been wound around the '-flrst layer 55, aowlofair under a higher pressurev may be used.' Atthis point, air at about fty pounds pressure i`s=suf ficlent. Where, as illustrated, the rstylaye'r 55 andthe cords .53 :and'54 are Covered .furtherwith a 'second layer of hose materiali, astillgliigher `pressure may 'be-used... A'pressure of aboutf'sevmandrel, butl also expands the..` hose` inthe lcuring machine so that it is more uniformly and more effectively cured. 'I'he finished end 59 of the hose is crimped or is otherwise sealed to prevent air escaping therefrom, and during the entire manufacturing process the hose is inflated with air entering the ports 22, 25 and 28. A suitable balance of air pressures may be easily maintained by regulating the flow and pressure of air through the three channels 2l, 24 and 21. This can be done by means well known in the art and specific illustration of such means is therefore not shown. The compressed air or other lubricant sources are not shown in the drawings, since they also are well known to persons skilled in the art. Conventional mechanical air compressors or tanks containing air under pressure provide simple and suitable air lubricant means.

The nozzle members 40 are connected to tanks or vats 4l of bulk plastic rubber. These nozzles fit around the peripheral surface 31 of the mandrel, as shown. The rear portion 43 of the first nozzle is closed and is attached to the mandrel 20. Its orifice 42 is spaced from and surrounds the mandrel and forms, when the plastic rubber is forced therethrough, a rst layer 55 of raw or uncured rubber around the mandrel. This layer 55 is forced longitudinally along the mandrel and over the first vent 23. The partially formed tube then passes through the hereinafter described plying device and over the second vent 26 and into the second nozzle 40. The second nozzle has an open rear Wall 44 to receive the rst layer of rubber 55 and the windings 53 and 54 thereon. as shown. This second nozzle is similarly spaced from the mandrel and particularly from the second ply of cord 54, a distance corresponding to the thickness of the rubber layer 5B desired. Its orifice 45 is shaped to conform with the shape of the hose to be formed. That is, it may be grooved to form longitudinal ridges on the hose, or it may be round and smooth as shown.

The plying device is broadly indicated by the reference character and consists of a suitable frame which revolves around the mandrel 20. It has spools of cord 5| which are applied in a helical fashion around the first layer of rubber 55. The first winding mechanism 52, which is only schematically shown, applies the cord 53 in a clockwise direction and the second Winding mechanism 52 applies the second cord 54 in a counterclockwise direction and on top of the cord winding 53. The two plies of cord 53 and 54 reinforce each other and are neatly embedded between the first and second layers of rubber 55 and 56.

The hose is then made to move along the mandrel into a curing machine 35 of a type more particularly described in my co-pending application, Serial No. 777,629, and which was led concurrently with this application.

Having thus disclosed the invention in its preferred form, it should be understood that the specific embodiment thereof as described and illustrated herein is not to be considered in a limited sense, as there may be other forms or modiiications of the invention which should also be construed to come within the scope of the appended claims.

I claim:

1. A hose former, comprising in combination, a rigid mandrel having a channel therethrough and opening into the periphery thereof, a nozzle member surrounding the mandrel and connected to a supply of bulk hose material, the said nozzle being capable of continuously ejecting and forming a tube of hose material around the mandrel Cil proximate to the said channel opening, and a supply of lubricating iiuid connected to the channel and conducted therethrough to a space formed between the mandrel and the tube.

2. A hose former, comprising in combination, a rigid mandrel having a plurality of channels and spaced vents therethrough opening into the periphery thereof, a nozzle member surrounding the mandrel and connected to a supply of bulk hose material, the said nozzle being capable of continuously ejecting and forming a tube of hose material around the mandrel proximate to the spaced vents, and a supply of lubricating fluid connected to the channel and conducted therethrough to a space formed between the mandrel and the tube.

3. A hose former, comprising in combination, a rigid mandrel having a plurality of air channels and spaced vents therethrough opening into the periphery thereof, a nozzle member surrounding the mandrel and connected to a supply of bulk hose material, the said nozzle being capable of continuously ejecting and forming a tube of hose material around the mandrel proximate to the spaced vents, and a supply of air connected to the channel and conducted therethrough to a space formed between the mandrel and the tube.

4. A hose former, comprising in combination, a rigid mandrel having a plurality of air channels and spaced vents therethrough opening into the periphery thereof, a nozzle member surrounding the mandrel and connected to a supply of bulk hose material, the said nozzle being capable of continuously ejecting and forming a tube of hose material around the mandrel proximate to the spaced vents, and a supply of compressed air connected to the channel and conducted therethrough to a space formed between the mandrel and the tube, the pressure of the air in each of the channels being at different pressures.

5. A hose former, comprising in combination, a rigid mandrel having a channel therethrough and opening into the periphery thereof, a plurality of nozzle members each surrounding the mandrel and connected to a supply of bulk hose material, each of the said nozzles being capable of continuously ej ecting and forming a tube of hose material around the mandrel, and a supply of lubricating fluid connected to the channel and conducted therethrough to a space formed between the mandrel and the tube.

6. A hose former, comprising in combination, a rigid mandrel having a channel therethrough and opening into the periphery thereof, two spaced nozzle members each surrounding the mandrel and connected to a supply of bulk hose material, each of the said nozzle members being capable of continuously ejecting and forming a tube of hose material around the mandrel, a cord plying device between the two nozzle members and capable of applying a layer of cord on the first tube formed by one of the nozzle members, and a supply of lubricating iuid connected to the channel and conducted therethrough to a space formed between the mandrel and the first tube.

7. A hose former, comprising in combination, a rigid mandrel having a plurality of air channels and spaced vents therethrough opening into the periphery thereof, two spaced nozzle members each surrounding the mandrel and connected to a. supply of bulk hose material, each of the said nozzle members being capable of continuously ejecting and forming a tube of hose material around the mandrel, a cord plying device between the two nozzle members and capable of applying a layer of cord on the rs-t tube formed by one of the nozzle members, and a supply of air connected to the channel and conducted therethrough to a space formed between the mandrel and the tube.

8. A hose former, comprising in combination, a rigid mandrel having a channel therethrough and opening into the periphery thereof, a nozzle member surrounding the mandrel and connected to a supply of bulk hose material, the said nozzle member being capable of continuously ejecting and forming a tube of hose material around the mandrel proximate to the said channel opening, a. cord plying device proximate to the nozzle member capable of applying a layer of cord on the tube formed by the nozzle member, and a supply of lubricating fluid connected to the channel and conducted therethrough to a space formed between the mandrel and the tube.

9. A hose former, comprising in combination, a rigid mandrel having a channel therethrough and opening into the periphery thereof, a nozzle member surrounding the mandrel and connected to a supply of bulk hose material, the said nozzle member being capable of continuously ejecting and forming a tube of hose material around the mandrel proximate to the said channel opening, a cord plying device proximate to the nozzle REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 127,755 Forsyth June 11, 1872 459,536 Simon Sept. l5, 1891 1,455,946 Wes-ter May 22, 1923 1,913,327 Barnes June 6, 1933 2,119,465 Meyer May 3l, 1938 2,171,764 Ramsdell Sept. 5, 1939 2,343,747 Chernack Mar. 7, 1944 2,361,026 Greene Oct. 24, 1944 

